Alert archive / Ohio / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 61, NWS Wilmington, OH

May 18, 1997Delaware County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at May 18, 1997, 5:44 PM EDT for Delaware County, Ohio. It was in force for 46 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 18, 1997, 5:44 PM EDT (21:44 UTC)
Expired: May 18, 1997, 6:30 PM EDT
In force: 46 min
Issued by: NWS Wilmington, OH
Area: Whole counties

County Delaware County, OH

What was reported inside it

Time	Report	Where	Remark
May 18, 5:50 PM EDT	Thunderstorm Wind 60	Delaware, OH	Numerous trees downed. Six homes were damaged when trees fell on them.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 18, 3:45 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.7 hours before the alert went out and 116 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 72 J/kg
Mixed-layer CIN: -147 J/kg
Mixed-layer LCL: 1311 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wilmington, OH wrote its last area forecast discussion before this severe thunderstorm warning went out at May 18, 3:07 PM EDT, 2 hours 37 minutes earlier.

Area forecast discussion, May 18, 3:07 PM EDT, 2 hours 37 minutes before

FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
306 PM EDT SUN MAY 18 1997

TSRA DEVELOPING ACROSS FA THIS PM WITH SOME GOLFBALL SIZE HAIL REPORTED
WITHIN LAST HALF HOUR IN HARDIN COUNTY NEAR ROUNDHEAD.  XPCT STORMS TO
CONTINUE TO DEVELOPING THIS PM INTO THE EVENING.  SCT STORMS POSSIBLE
THRU MON.  SHOULD HAVE MORE CLOUDS TOMORROW SO INSTABILITY WL BE
WEAKER....BUT ENUF FOR POSSIBLE SVR.  CLE...WRK ZONES LOOK GOOD.

WILKINSON,

In the hours before

Special weather statement, May 18, 3:30 PM EDT, 2 hours 14 minutes before

INZ050-OHZ015-016-024>026-034-035-042-044-045-051>056-060>062-
064-065-190200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
330 PM EDT SUN MAY 18 1997

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PARTS OF WESTERN AND CENTRAL
   OHIO...

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF CENTRAL OHIO
UNTIL 10 PM EDT. COLUMBUS IS INCLUDED IN THIS WATCH.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR WEST CENTRAL OHIO AND
THE MIAMI VALLEY UNTIL 8 PM EDT. SOME CITIES INCLUDED IN THIS WATCH
AREA INCLUDE DAYTON...SPRINGFIELD AND LIMA.

VERY UNSTABLE CONDITIONS HAVE DEVELOPED ACROSS THE AREA THIS AFTERNOON.
A STRONG UPPER LEVEL SYSTEM APPROACHING THE AREA WILL HELP
THUNDERSTORMS THAT WERE DEVELOPING THIS AFTERNOON TO QUICKLY BECOME
SEVERE.  THESE STORMS WILL BE CAPABLE OF PRODUCING WIND DAMAGE AND
LARGE HAIL.

STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER UPDATES.

LOTT

Special weather statement, May 18, 3:34 PM EDT, 2 hours 10 minutes before

INZ050-OHZ015-016-024>026-034-035-042-044-045-051>056-060>062-
064-065-190200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
330 PM EDT SUN MAY 18 1997

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PARTS OF WESTERN AND CENTRAL
   OHIO...

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF CENTRAL OHIO
UNTIL 10 PM EDT. COLUMBUS IS INCLUDED IN THIS WATCH.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR WEST CENTRAL OHIO AND
THE MIAMI VALLEY UNTIL 8 PM EDT. SOME CITIES INCLUDED IN THIS WATCH
AREA INCLUDE DAYTON...SPRINGFIELD AND LIMA.

VERY UNSTABLE CONDITIONS HAVE DEVELOPED ACROSS THE AREA THIS AFTERNOON.
A STRONG UPPER LEVEL SYSTEM APPROACHING THE AREA WILL HELP
THUNDERSTORMS THAT WERE DEVELOPING THIS AFTERNOON TO QUICKLY BECOME
SEVERE.  THESE STORMS WILL BE CAPABLE OF PRODUCING WIND DAMAGE AND
LARGE HAIL.

STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER UPDATES.

LOTT

Local storm report, May 18, 5:13 PM EDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
513 PM EDT SUN MAY 18 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0427 PM    LAFAYETTE                 OH   WIND DAMAGE
05/18/97   ALLEN                          ROOF BLOWN OFF BARN/POWER
                                          LINES DOWN 1 TREE DOWN

0500 PM    NEW CARLISLE              OH   .88 INCH HAIL
05/18/97   CLARK

Local storm report, May 18, 5:14 PM EDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
513 PM EDT SUN MAY 18 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0427 PM    LAFAYETTE                 OH   WIND DAMAGE
05/18/97   ALLEN                          ROOF BLOWN OFF BARN/POWER
                                          LINES DOWN 1 TREE DOWN

0500 PM    NEW CARLISLE              OH   .88 INCH HAIL
05/18/97   CLARK

Local storm report, May 18, 5:30 PM EDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
530 PM EDT SUN MAY 18 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0520 PM    MECHANICSBURG             OH   WIND DAMAGE
05/18/97   CHAMPAIGN                      SEVERAL TREES DOWN/ROOF
                                          BLOWN OFF BARN

Local storm report, May 18, 5:31 PM EDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
530 PM EDT SUN MAY 18 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0520 P*M    MECHANICSBURG             OH   WIND DAMAGE
05/18/97   CHAMPAIGN                      SEVERAL TREES DOWN/ROOF
                                          BLOWN OFF BARN

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 18, 3:12 AM EDT	Severe Thunderstorm Warning	ILN	Auglaize	43 min
May 18, 4:13 AM EDT	Severe Thunderstorm Warning	ILN	Delaware	42 min
May 18, 5:11 AM EDT	Severe Thunderstorm Warning	ILN	Delaware	44 min
May 18, 2:23 PM EDT	Severe Thunderstorm Warning	ILN	Auglaize	37 min
May 18, 2:46 PM EDT	Severe Thunderstorm Warning	ILN	Allen, Hardin	29 min
May 18, 4:19 PM EDT	Severe Thunderstorm Warning	ILN	Allen	41 min
May 18, 5:00 PM EDT	Severe Thunderstorm Warning	ILN	Clark	30 min
May 18, 5:18 PM EDT	Severe Thunderstorm Warning	ILN	Champaign	27 min
May 18, 5:32 PM EDT	Severe Thunderstorm Warning	ILN	Madison, Union	28 min
May 18, 6:07 PM EDT	Severe Thunderstorm Warning	ILN	Franklin	38 min
May 18, 6:26 PM EDT	Severe Thunderstorm Warning	ILN	Fairfield, Licking	34 min
May 18, 6:31 PM EDT	Severe Thunderstorm Warning	ILN	Scioto	44 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1997 Every severe thunderstorm warning in 1997

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.